Question

p+3w=-79-5p+w=-5Solve the system using the elimination method if there is no solution put no solution if there is infinite solutions put infinite

Answer 1

p+3w=-79

-5p+w=-5

Multiply the second equation by 3 and then subtract the second equation:

p + 3w = -79

-

-15p + 3w = -15

_____________

16p = -64

p= -64/16

p= -4

Replace p on any equation and solve for w

-4 + 3w = -79

3w = -79 + 4

3w = -75

w= -75/3

w= -25

Solution:

p= -4

w= -25